604 
WUUS55 KBOU 220239
SVRBOU
COC073-220315-
/O.NEW.KBOU.SV.W.0024.260522T0239Z-260522T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
839 PM MDT Thu May 21 2026

The National Weather Service in Denver has issued a

* Severe Thunderstorm Warning for...
  Northeastern Lincoln County in east central Colorado...

* Until 915 PM MDT.

* At 839 PM MDT, a severe thunderstorm was located 4 miles southwest
  of Arriba, or 18 miles east of Limon, moving east at 20 mph.

  HAZARD...Golf ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail
           damage to roofs, siding, windows, and vehicles. Expect
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  Arriba.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. This storm is capable of producing
dangerous hail and damaging winds.

Tornadoes can develop quickly from severe thunderstorms. Seek shelter
immediately in an interior room on the lowest floor of a well-built
structure.

&&

LAT...LON 3919 10342 3935 10337 3933 10316 3912 10316
TIME...MOT...LOC 0239Z 287DEG 16KT 3926 10335

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

63

922 
WWUS55 KBOU 220254
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
854 PM MDT Thu May 21 2026

COC073-220315-
/O.CON.KBOU.SV.W.0024.000000T0000Z-260522T0315Z/
Lincoln CO-
854 PM MDT Thu May 21 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM MDT FOR
EAST CENTRAL LINCOLN COUNTY...

At 854 PM MDT, a severe thunderstorm was located near Arriba, or 23
miles east of Limon, moving east at 20 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to
         roofs, siding, and trees.

Locations impacted include...
  Arriba.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.

&&

LAT...LON 3918 10338 3934 10331 3933 10316 3912 10316
TIME...MOT...LOC 0239Z 287DEG 16KT 3926 10335

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

63

388 
WWUS55 KBOU 220311
SVSBOU

Severe Weather Statement
National Weather Service Denver CO
911 PM MDT Thu May 21 2026

COC073-220321-
/O.EXP.KBOU.SV.W.0024.000000T0000Z-260522T0315Z/
Lincoln CO-
911 PM MDT Thu May 21 2026

...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 915 PM MDT FOR EAST
CENTRAL LINCOLN COUNTY...

The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 1000 PM MDT for a
portion of east central Colorado.

&&

LAT...LON 3918 10338 3934 10331 3933 10316 3912 10316
TIME...MOT...LOC 0254Z 287DEG 16KT 3924 10327

$$

22